Combined gas and coal stove.



A. C. EDGAR.

COMBINED GAS AND COAL sovE.

APPLICATION FILED SEPT.14. 1911.

Patented Dec. 14, 1915.

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A. C. EDGAR.

COMBINED GAS AND COAL STOVE.

APPLlcAhoN FILED SEPTA 14. 191x.

l .l Patented Dec. 14, 1915.

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A. C. EDGAR.

COMBINED GAS AND COAL sTovE.

APPLICATION FILED SEPT. I4. I9I I.

Patented Deo. 14, 1915.

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ANDREW C. EDGAR, OF NEWTOWN SQUARE, PENNSYLVANIA, ASSIGNOR T0 ABRAM coxs'rovn COMPANY, or PHILADELPHIA, PENNSYLVANIA, A CORPORATION orPENNSYLVANIA.

COMBINED GAS ANDyCOAL STOVE.

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Specification of Letters Patent.

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Application led September 14, 1911. Serial No. 649,259.

To @ZZ icl/Lam it may concern? i Be it known that I, ANDREW C. EDGAR, acitizen of the United States, residing in lNewtown Square, county ofDelaware, State ot Pennsylvania, have invented certain Improvements inCombined GasA and Coal Stoves, of which the following is aspecification. I

This invention relates to certain improvements in combined gas and coalstoves,.and the object of the invention is to provide a water back forthe stove, which is common to both the gas section and to the coalsection of the' stove. Y

The invention is particularly adapted for use in connection with a gasstove having a comparatively small coal section which can be used whenit is desired to have a continuous supply ot' hot water.

In the accompanying drawings :-F1gure 1, is a transverse sectional viewof my improved combined gas and coal stove; Fig. 2, is a sectional planview on the line 2 2, Fig. l; Fig. 3, is an end View of my imrovedcombined gas and coal stove; Fig. 4, is 'a detached view of one of thesections of the water heater; Fig. 5, is a detached view of a section ofthe water heater forming the water back of the fire pot; Fig. 6, is anenlarO'ed sectional plan view of the burner; an Fig. 7, is a perspectiveview of the stove illustrating my invention.

A is the base of the stove.

B is the top which may have the usual openings directly above the gassection under which are located the burners, with other openingsdirectly above the coal section; these latter openings being closed bylids of the ordinary construction.

A is the gas section of the stove and A2 is the coal section. The gassection may have the usual oven and any number of burners desired,according to the type of stove to which the invention is applied. Thecoal section does not extend to the full depth of the stove, and thereis a chamber A3 back of the coal section for the Water heating device.rlhe coal section has the usual lire bricks a, a at the front and ateach side, and the section l of the heating device D forms the waterback for the fire pot of the coal section, as clearly shown in Fig. 2.Directly under the fire pot of the coal section is the ash pit C havinga door c.

rlhe combustion chamber B for the coal section eXtends the full depth ofthe stove and over the space A3 for `the water heatingdevice;.the-products of combustion passing through the flue Z) at theback of the stove. The water heating device D consists, in the presentinstance, of three sections d, cl, Z2 of the form illustrated in Figs.4: and 5. Each section d and cl2 has a header e at the top and anotherheader e at the base connected by tubular members c2, and the section lhas a portion f which extends across the back of the lire boX, anddepending from this section f are tubular members f which communicatewith a lower header ff as shown in Fig. 5. The sections are connectedthrough nipples g at the top and nipples g at the bottom so that thewater is free to circulate through all of the sections of the waterheater and, if it is desired, another section may be added. The outersection cl2 has openings at the top and bottom closed with plugs z.,71.. On removing these plugs, nipples can be introduced to couple theadditional section if more heating surface is found necessary. Thesections cl, d2 have lateral openings z', z" to which the circulatingpipes I, I are coupled. These circulating pipes extend to the boiler JWhich is of the horizontal type, in the present instance, and issupported on brackets resting on the base of the stove in the usualmanner.

Mounted on brackets m, in the present instance, is a burner M, locateddirectly under the water heating device, and this burner is made asshown in Figs. 1 and 6 and has three arms m connected by a cross memberm2. The gas pipe 29 enters a funnel shaped casing P, which is connectedto the end of the central arm mi and has a rotary damper p forcontrolling the air supplied to the burner. The arms m are shaped asshown clearly in the sectional view, Fig. l, and each has a perforatedupper surface for the escape of gas. Air and gas enter the middlesection and pass to the outer sections through the cross channel m2,'the gas escaping on its way through the small openings. The gas iscontrolled by a suitable valve ,'02 in the service pipe S, which alsoleads through a branch S to the upper oven and through a branch S2 tothe burners under the top plate of the range and the lower oven.

The compartment A3, in which the heater is located, has a vent opening tin the top plate T closed by a damper t which, in the present instance,is operated from the front of the range. This damper is closed when thegas is cut off and the coal fire is used, but when the gas isA turnedon' to heat the water heating device, then this damper is opened toallow the chamber A3 to communicate through the lue b with the burner.

By the above description, it will be seen that I am enabled to constructa gas stove having a coal section provided with a water heating devicewhich is common to both the gas section and the coal section.Furthermore, the heating surface of the device can be increased ordiminished, as desired, by simply adding one of the sections or removingone of the sections.

I claim 1. The combination in a water heating device for a combined gasand coal stove, of a casing; a re'pot for the coal; a chamber back ofthe fire pot; a series of tubular water heating sections verticallyarranged, one of said sections having a solid portion forining the backof the fire pot; and a gas burner located within the chamber back of theire pot and under the series of sections.

2. The combination in a combined gas and coal stove,` of a iire potsection; a chamber directly back of the ire pot section; a water heatingdevice consisting of a series of tnbular sections placed side by sideand of a greater length than the height oi the lire pot, said sectionsextending back of the ash pit; a gas burner located under the sections,the forward section of the series having a Solid portion forming theback of the iire pot so that the water section is heated either by theproducts of combustion from the coal 0r from the gas burners.

In testimony whereof, I have signed my name to this speciiication, inthe presence o't two subscribing witnesses.

ANDREW C. EDGAR.

IVitnesses WM. E. Si-iUrE, IVM. A. BARR.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents. Washington, D. C.

